I didn't find any unique fighting style for this one so I gave it the potential to attack as many times as the heads it has, 2.[/spoiler] 6
Surveil is different from Scry, and is often more useful for a deck that can recur things from or want a full graveyard
However, it requires you to cast noncreature spells or cards that provide oil counters in order to enable its tap damage
Just like the Timetwister, this is a Power Nine in Scheme form, ready to bust things up
For our purposes, it's close to a perfect land: It enters the battlefield untapped, giving us a turn-one Siren Stormtamer or Deadeye Tracker while helping us cast a two-drop of the opposite color on the next turn, like Kitesail Freebooter or Kari Zev, Skyship Raider
Given how powerful Master Ball is, I would imagine this will be the go-to ACE SPEC pick for most decks.